30dB
Extremely quiet control rooms
Silence in a library or in a clothing warehouse
40dB
Silence at home
Calm countryside at night
50dB
Background hum of daytime in the woods
Whispered conversation
Listening to music at night
A fridge at home
60dB
Normal conversation in a room
Background noise in an office on a working day
Soft and comfortable listening to music
Music playback in a car
70dB
Loud and comfortable listening to music at home
Radio, TV or a vacuum cleaner
Too loud music playback in a parked car with its engine running
Average levels of a live concert in a hall (rock or classical)
80dB
Dishwasher
Passing truck or train
Screaming kids at home
Very loud music playback at home
Classical concert in an open venue
90dB
Lawn mower
Unbearable music level in a car
Loud rock concert in a closed small venue (like a club)
Classical concert in a concert hall
Aircraft landing from 200 meters
100dB
A tractor, helicopter or racing car from 10 meters
Loud rock concert in a closed venue
Hand drill
Underground traffic (subway)